The first alpha of Ubuntu 10.04 Lucid Lynx is now available for testing. This will will be followed by two more alphas, two betas and an RC before the final release in April 2010. You can see the complete released schedule here. This release is meant purely for testing and not for production use.

Ubuntu 10.04 Alpha 1 brings several changes. Notable among them are:

GNOME 2.29.3

KDE SC 4.4 Beta 1

Linux Kernel 2.6.32

HAL Removal

One particularly big change is the complete removal of HAL packages. This is done to cut down on the boot time and make it faster to resume from suspend mode. However, there are already report claiming that it is causing performance regressions.